package com.heima.wemedia.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.ObjectUtils;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.file.service.FileStorageService;
import com.heima.model.common.dtos.PageResponseResult;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.wemedia.dtos.WmMaterialDto;
import com.heima.model.wemedia.pojos.WmMaterial;
import com.heima.utils.common.thread.WmThreadLocalUtil;
import com.heima.wemedia.mapper.WmMaterialMapper;
import com.heima.wemedia.service.WmMaterialService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.util.Date;
import java.util.UUID;

@Service
@Slf4j
@Transactional
public class WmMaterialServiceImpl extends ServiceImpl<WmMaterialMapper, WmMaterial> implements WmMaterialService {
   @Autowired
    FileStorageService fileStorageService;
    private static Integer MISTAKE_MUMBER = 0;
    @Override
    public ResponseResult uploadPicture(MultipartFile multipartFile) {
        //判断multipartiFile是否为空
        if (ObjectUtils.isEmpty(multipartFile) ||MISTAKE_MUMBER.equals(multipartFile.getSize())){
           return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID,"图片为空或者数据错误");
        }else {
            String filepath = null;
            try {
                String originalFilename = multipartFile.getOriginalFilename();
                int index = originalFilename.lastIndexOf(".");
                String postfix = originalFilename.substring(index);
                String prefix = UUID.randomUUID().toString().replace("-","");
                filepath = fileStorageService.uploadImgFile("", prefix + postfix, multipartFile.getInputStream());
            } catch (IOException e) {
                return ResponseResult.errorResult(AppHttpCodeEnum.SERVER_ERROR);

            }
            //保存到数据库中
            WmMaterial wmMaterial = new WmMaterial();
            wmMaterial.setUrl(filepath);
            wmMaterial.setType((short)0);
            wmMaterial.setUserId(WmThreadLocalUtil.getUser().getApUserId());
            wmMaterial.setCreatedTime(new Date());
            wmMaterial.setIsCollection((short) 0);
            save(wmMaterial);
            return ResponseResult.okResult(wmMaterial);
        }

    }

    @Override
    public ResponseResult findList(WmMaterialDto dto) {

        //1.检查参数
        dto.checkParam();

        //2.分页查询
        IPage page = new Page(dto.getPage(),dto.getSize());
        LambdaQueryWrapper<WmMaterial> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        //是否收藏
        if(dto.getIsCollection() != null && dto.getIsCollection() == 1){
            lambdaQueryWrapper.eq(WmMaterial::getIsCollection,dto.getIsCollection());
        }

        //按照用户查询
        lambdaQueryWrapper.eq(WmMaterial::getUserId,WmThreadLocalUtil.getUser().getApUserId());

        //按照时间倒序
        lambdaQueryWrapper.orderByDesc(WmMaterial::getCreatedTime);


        page = page(page,lambdaQueryWrapper);

        //3.结果返回
        ResponseResult responseResult = new PageResponseResult(dto.getPage(),dto.getSize(),(int)page.getTotal());
        responseResult.setData(page.getRecords());
        return responseResult;
    }
}
